EMCOR Group - - Responsibilities: Helps identify problems with heating, ventilation, and/or air conditioning systems for commercial and industrial customers; Carefully examines the equipment to diagnose and troubleshoot problems; Assists HVAC foreman in the repair or replacement of defective equipment, mechanical components, or wiring within the HVAC system; Performs preventive maintenance tasks and inspections on HVAC equipment; Inspects HVAC systems for effectiveness and safety